kern/48887: backtrace/libexecinfo causes high system cpu and never returns when building ruby 2.1

To: kern-bug-people%netbsd.org@localhost,gnats-admin%netbsd.org@localhost,netbsd-bugs%netbsd.org@localhost
Subject: kern/48887: backtrace/libexecinfo causes high system cpu and never returns when building ruby 2.1
From: msporleder%gmail.com@localhost
Date: Mon, 9 Jun 2014 11:05:01 +0000 (UTC)
>Number:         48887
>Category:       kern
>Synopsis:       backtrace/libexecinfo causes high system cpu and never returns 
>when building ruby 2.1
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Jun 09 11:05:01 +0000 2014
>Originator:     matt sporleder
>Release:        6.0.2
>Organization:
netbsd
>Environment:
NetBSD vc136-15.vc.panix.com 6.0.2 NetBSD 6.0.2 (PANIX-VC) #0: Sun May 19 
03:41:56 EDT 2013  
root%juggler.panix.com@localhost:/misc/obj/misc/devel/netbsd/6.0.2/src/sys/arch/amd64/compile/PANIX-VC
 amd64
>Description:
building ruby21-base results in 100% cpu load, mostly in system time, after 
'checking for broken backtrace...' during the configure script.

The ktrace of the attached program can be found here:
https://gist.github.com/msporleder/ab2a4e5f1bd0db3f1034
>How-To-Repeat:
/* confdefs.h */
#define PACKAGE_NAME ""
#define PACKAGE_TARNAME ""
#define PACKAGE_VERSION ""
#define PACKAGE_STRING ""
#define PACKAGE_BUGREPORT ""
#define PACKAGE_URL ""
#define CANONICALIZATION_FOR_MATHN 1
#define STDC_HEADERS 1
#define HAVE_SYS_TYPES_H 1
#define HAVE_SYS_STAT_H 1
#define HAVE_STDLIB_H 1
#define HAVE_STRING_H 1
#define HAVE_MEMORY_H 1
#define HAVE_STRINGS_H 1
#define HAVE_INTTYPES_H 1
#define HAVE_STDINT_H 1
#define HAVE_UNISTD_H 1
#define __EXTENSIONS__ 1
#define _ALL_SOURCE 1
#define _GNU_SOURCE 1
#define _POSIX_PTHREAD_SEMANTICS 1
#define _TANDEM_SOURCE 1
#define RUBY_SYMBOL_EXPORT_BEGIN _Pragma("GCC visibility push(default)")
#define RUBY_SYMBOL_EXPORT_END _Pragma("GCC visibility pop")
#define HAVE_LIBCRYPT 1
#define HAVE_DIRENT_H 1
#define HAVE__BOOL 1
#define HAVE_STDBOOL_H 1
#define HAVE_SYS_WAIT_H 1
#define HAVE_LIMITS_H 1
#define HAVE_SYS_FILE_H 1
#define HAVE_SYS_IOCTL_H 1
#define HAVE_SYS_SYSCALL_H 1
#define HAVE_FCNTL_H 1
#define HAVE_SYS_FCNTL_H 1
#define HAVE_SYS_SELECT_H 1
#define HAVE_SYS_TIME_H 1
#define HAVE_SYS_TIMES_H 1
#define HAVE_SYS_PARAM_H 1
#define HAVE_PWD_H 1
#define HAVE_GRP_H 1
#define HAVE_A_OUT_H 1
#define HAVE_UTIME_H 1
#define HAVE_SYS_RESOURCE_H 1
#define HAVE_FLOAT_H 1
#define HAVE_IEEEFP_H 1
#define HAVE_UCONTEXT_H 1
#define HAVE_LANGINFO_H 1
#define HAVE_LOCALE_H 1
#define HAVE_TIME_H 1
#define HAVE_SYS_SOCKET_H 1
#define HAVE_ATOMIC_H 1
#define HAVE_MALLOC_H 1
#define HAVE_LONG_LONG 1
#define HAVE_OFF_T 1
#define SIZEOF_INT 4
#define SIZEOF_SHORT 2
#define SIZEOF_LONG 8
#define SIZEOF_LONG_LONG 8
#define SIZEOF___INT64 0
#define SIZEOF___INT128 0
#define SIZEOF_OFF_T 8
#define SIZEOF_VOIDP 8
#define SIZEOF_FLOAT 4
#define SIZEOF_DOUBLE 8
#define SIZEOF_TIME_T 8
#define SIZEOF_CLOCK_T 4
#define PRI_LL_PREFIX "ll"
#define rb_pid_t pid_t
#define SIGNEDNESS_OF_PID_T -1
#define PIDT2NUM(v) INT2NUM(v)
#define NUM2PIDT(v) NUM2INT(v)
#define PRI_PIDT_PREFIX PRI_INT_PREFIX
#define rb_uid_t uid_t
#define SIGNEDNESS_OF_UID_T +1
#define UIDT2NUM(v) UINT2NUM(v)
#define NUM2UIDT(v) NUM2UINT(v)
#define PRI_UIDT_PREFIX PRI_INT_PREFIX
#define rb_gid_t gid_t
#define SIGNEDNESS_OF_GID_T +1
#define GIDT2NUM(v) UINT2NUM(v)
#define NUM2GIDT(v) NUM2UINT(v)
#define PRI_GIDT_PREFIX PRI_INT_PREFIX
#define rb_time_t time_t
#define SIGNEDNESS_OF_TIME_T -1
#define TIMET2NUM(v) LONG2NUM(v)
#define NUM2TIMET(v) NUM2LONG(v)
#define PRI_TIMET_PREFIX PRI_LONG_PREFIX
#define rb_dev_t dev_t
#define SIGNEDNESS_OF_DEV_T +1
#define DEVT2NUM(v) ULONG2NUM(v)
#define NUM2DEVT(v) NUM2ULONG(v)
#define PRI_DEVT_PREFIX PRI_LONG_PREFIX
#define rb_mode_t mode_t
#define SIGNEDNESS_OF_MODE_T +1
#define MODET2NUM(v) UINT2NUM(v)
#define NUM2MODET(v) NUM2UINT(v)
#define PRI_MODET_PREFIX PRI_INT_PREFIX
#define rb_rlim_t rlim_t
#define SIGNEDNESS_OF_RLIM_T +1
#define RLIM2NUM(v) ULONG2NUM(v)
#define NUM2RLIM(v) NUM2ULONG(v)
#define PRI_RLIM_PREFIX PRI_LONG_PREFIX
#define rb_off_t off_t
#define SIGNEDNESS_OF_OFF_T -1
#define OFFT2NUM(v) LONG2NUM(v)
#define NUM2OFFT(v) NUM2LONG(v)
#define PRI_OFFT_PREFIX PRI_LONG_PREFIX
#define rb_clockid_t clockid_t
#define SIGNEDNESS_OF_CLOCKID_T -1
#define CLOCKID2NUM(v) INT2NUM(v)
#define NUM2CLOCKID(v) NUM2INT(v)
#define PRI_CLOCKID_PREFIX PRI_INT_PREFIX
#define HAVE_PROTOTYPES 1
#define TOKEN_PASTE(x,y) x##y
#define STRINGIZE(expr) STRINGIZE0(expr)
#define HAVE_STDARG_PROTOTYPES 1
#define HAVE_VA_ARGS_MACRO 1
#define NORETURN(x) __attribute__ ((noreturn)) x
#define DEPRECATED(x) __attribute__ ((deprecated)) x
#define NOINLINE(x) __attribute__ ((noinline)) x
#define HAVE_ATTRIBUTE_FUNCTION_ALIAS 1
#define RUBY_ALIAS_FUNCTION_TYPE(type, prot, name, args) type prot 
__attribute__((alias(#name)));
#define RUBY_ALIAS_FUNCTION_VOID(prot, name, args) 
RUBY_ALIAS_FUNCTION_TYPE(void, prot, name, args)
#define HAVE_GCC_SYNC_BUILTINS 1
#define UNREACHABLE __builtin_unreachable()
#define RUBY_FUNC_EXPORTED __attribute__ ((visibility("default"))) extern
#define RUBY_FUNCTION_NAME_STRING __func__
#define HAVE_DECL_SYS_NERR 1
#define HAVE_DECL_GETENV 1
#define SIZEOF_SIZE_T 8
#define SIZEOF_PTRDIFF_T 8
#define PRI_SIZE_PREFIX "z"
#define PRI_PTRDIFF_PREFIX "t"
#define HAVE_STRUCT_STAT_ST_BLKSIZE 1
#define HAVE_ST_BLKSIZE 1
#define HAVE_STRUCT_STAT_ST_BLOCKS 1
#define HAVE_ST_BLOCKS 1
#define HAVE_STRUCT_STAT_ST_RDEV 1
#define HAVE_ST_RDEV 1
#define SIZEOF_STRUCT_STAT_ST_SIZE SIZEOF_LONG
#define SIZEOF_STRUCT_STAT_ST_BLOCKS SIZEOF_LONG
#define HAVE_STRUCT_STAT_ST_ATIMESPEC 1
#define HAVE_STRUCT_STAT_ST_ATIMENSEC 1
#define HAVE_STRUCT_STAT_ST_MTIMESPEC 1
#define HAVE_STRUCT_STAT_ST_MTIMENSEC 1
#define HAVE_STRUCT_STAT_ST_CTIMESPEC 1
#define HAVE_STRUCT_STAT_ST_CTIMENSEC 1
#define HAVE_STRUCT_TIMEVAL 1
#define SIZEOF_STRUCT_TIMEVAL_TV_SEC SIZEOF_TIME_T
#define HAVE_STRUCT_TIMESPEC 1
#define HAVE_STRUCT_TIMEZONE 1
#define HAVE_CLOCKID_T 1
#define HAVE_RB_FD_INIT 1
#define HAVE_INT8_T 1
#define SIZEOF_INT8_T 1
#define HAVE_UINT8_T 1
#define SIZEOF_UINT8_T 1
#define SIZEOF_INT8_T 1
#define HAVE_UINT8_T 1
#define SIZEOF_UINT8_T 1
#define HAVE_INT16_T 1
#define SIZEOF_INT16_T 2
#define HAVE_UINT16_T 1
#define SIZEOF_UINT16_T 2
#define HAVE_INT32_T 1
#define SIZEOF_INT32_T 4
#define HAVE_UINT32_T 1
#define SIZEOF_UINT32_T 4
#define HAVE_INT64_T 1
#define SIZEOF_INT64_T 8
#define HAVE_UINT64_T 1
#define SIZEOF_UINT64_T 8
#define HAVE_INTPTR_T 1
#define SIZEOF_INTPTR_T 8
#define HAVE_UINTPTR_T 1
#define SIZEOF_UINTPTR_T 8
#define HAVE_SSIZE_T 1
#define SIZEOF_SSIZE_T 8
#define GETGROUPS_T gid_t
#define RETSIGTYPE void
#define HAVE_ALLOCA 1
#define HAVE_DUP2 1
#define HAVE_MEMMOVE 1
#define HAVE_STRERROR 1
#define HAVE_STRCHR 1
#define HAVE_STRSTR 1
#define HAVE_CRYPT 1
#define HAVE_FLOCK 1
#define HAVE_ISNAN 1
#define HAVE_FINITE 1
#define HAVE_ISINF 1
#define HAVE_HYPOT 1
#define HAVE_ACOSH 1
#define HAVE_ERF 1
#define HAVE_TGAMMA 1
#define HAVE_LGAMMA_R 1
#define HAVE_CBRT 1
#define HAVE_STRLCPY 1
#define HAVE_STRLCAT 1
#define HAVE_FFS 1
#define HAVE_SETPROCTITLE 1
#define HAVE_SIGNBIT 1
#define HAVE___SYSCALL 1
#define HAVE__LONGJMP 1
#define HAVE__SETJMP 1
#define HAVE_CHROOT 1
#define HAVE_CLOCK_GETTIME 1
#define HAVE_COSH 1
#define HAVE_DAEMON 1
#define HAVE_DL_ITERATE_PHDR 1
#define HAVE_DLOPEN 1
#define HAVE_DUP 1
#define HAVE_DUP3 1
#define HAVE_ENDGRENT 1
#define HAVE_FCHMOD 1
#define HAVE_FCHOWN 1
#define HAVE_FCNTL 1
#define HAVE_FDATASYNC 1
#define HAVE_FMOD 1
#define HAVE_FORK 1
#define HAVE_FSYNC 1
#define HAVE_FTRUNCATE 1
#define HAVE_GETCWD 1
#define HAVE_GETGRNAM_R 1
#define HAVE_GETGROUPS 1
#define HAVE_GETPGID 1
#define HAVE_GETPGRP 1
#define HAVE_GETPRIORITY 1
#define HAVE_GETPWNAM_R 1
#define HAVE_GETRLIMIT 1
#define HAVE_GETSID 1
#define HAVE_GETTIMEOFDAY 1
#define HAVE_GMTIME_R 1
#define HAVE_INITGROUPS 1
#define HAVE_IOCTL 1
#define HAVE_ISSETUGID 1
#define HAVE_KILLPG 1
#define HAVE_LCHMOD 1
#define HAVE_LCHOWN 1
#define HAVE_LINK 1
#define HAVE_LLABS 1
#define HAVE_LOCKF 1
#define HAVE_LOG2 1
#define HAVE_LSTAT 1
#define HAVE_MBLEN 1
#define HAVE_MEMRCHR 1
#define HAVE_MKTIME 1
#define HAVE_PIPE2 1
#define HAVE_POLL 1
#define HAVE_POSIX_FADVISE 1
#define HAVE_POSIX_MEMALIGN 1
#define HAVE_PREAD 1
#define HAVE_READLINK 1
#define HAVE_ROUND 1
#define HAVE_SEEKDIR 1
#define HAVE_SETEGID 1
#define HAVE_SETENV 1
#define HAVE_SETEUID 1
#define HAVE_SETGID 1
#define HAVE_SETGROUPS 1
#define HAVE_SETPGID 1
#define HAVE_SETPGRP 1
#define HAVE_SETREGID 1
#define HAVE_SETREUID 1
#define HAVE_SETRGID 1
#define HAVE_SETRLIMIT 1
#define HAVE_SETRUID 1
#define HAVE_SETSID 1
#define HAVE_SETUID 1
#define HAVE_SHUTDOWN 1
#define HAVE_SIGACTION 1
#define HAVE_SIGALTSTACK 1
#define HAVE_SIGPROCMASK 1
#define HAVE_SINH 1
#define HAVE_SYMLINK 1
#define HAVE_SYSCALL 1
#define HAVE_SYSCONF 1
#define HAVE_TANH 1
#define HAVE_TELLDIR 1
#define HAVE_TIMEGM 1
#define HAVE_TIMES 1
#define HAVE_TRUNCATE 1
#define HAVE_UNSETENV 1
#define HAVE_UTIMES 1
#define HAVE_WAIT4 1
#define HAVE_WAITPID 1
#define HAVE_BUILTIN___BUILTIN_BSWAP32 1
#define HAVE_BUILTIN___BUILTIN_BSWAP64 1
#define HAVE_BUILTIN___BUILTIN_CLZ 1
#define HAVE_BUILTIN___BUILTIN_CLZL 1
#define HAVE_BUILTIN___BUILTIN_CLZLL 1
#define HAVE_BUILTIN___BUILTIN_CHOOSE_EXPR 1
#define HAVE_BUILTIN___BUILTIN_TYPES_COMPATIBLE_P 1
#define HAVE_CLOCK_GETRES 1
#define RUBY_SETJMP(env) _setjmp(env)
#define RUBY_LONGJMP(env,val) _longjmp(env,val)
#define RUBY_JMP_BUF jmp_buf
#define HAVE_STRUCT_TM_TM_ZONE 1
#define HAVE_TM_ZONE 1
#define HAVE_STRUCT_TM_TM_GMTOFF 1
#define HAVE_DAYLIGHT 1
#define HAVE_VAR_TIMEZONE 1
#define TYPEOF_VAR_TIMEZONE long
#define HAVE_TIMEZONE 1
#define TIMEZONE_VOID 1
#define NEGATIVE_TIME_T 1
#define POSIX_SIGNAL 1
#define RSHIFT(x,y) ((x)>>(int)(y))
#define FILE_COUNT _r
#define FILE_READPTR _p
#define SIZEOF_STRUCT_STAT_ST_INO SIZEOF_LONG
#define HAVE__SC_CLK_TCK 1
#define STACK_GROW_DIRECTION -1
#define _REENTRANT 1
#define _THREAD_SAFE 1
#define HAVE_LIBPTHREAD 1
#define HAVE_SCHED_YIELD 1
#define HAVE_PTHREAD_ATTR_SETINHERITSCHED 1
#define HAVE_PTHREAD_GETATTR_NP 1
#define HAVE_PTHREAD_ATTR_GET_NP 1
#define HAVE_PTHREAD_ATTR_GETSTACK 1
#define HAVE_PTHREAD_COND_INIT 1
#define HAVE_PTHREAD_CONDATTR_INIT 1
#define HAVE_PTHREAD_SIGMASK 1
#define HAVE_PTHREAD_SETNAME_NP 1
#define HAVE_PTHREAD_ATTR_INIT 1
#define SET_THREAD_NAME(name) pthread_setname_np(pthread_self(), name, "%s")
#define HAVE_GETCONTEXT 1
#define HAVE_SETCONTEXT 1
#define USE_ELF 1
#define HAVE_ELF_H 1
#define HAVE_EXECINFO_H 1
#define HAVE_LIBEXECINFO 1
#define HAVE_BACKTRACE 1
/* end confdefs.h.  */

#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <signal.h>
#include <execinfo.h>

#define TRACE_SIZE 256

void sigsegv(int signum, siginfo_t *info, void *ctx){
    void *trace[TRACE_SIZE];
    int n = backtrace(trace, TRACE_SIZE);
    if (n > 0) {
        /*fprintf(stdout, "backtrace:%d\n",n);*/
    } else {
        abort();
    }
    _exit(0);
}
int
main()
{
    stack_t ss;
    ss.ss_sp = malloc(SIGSTKSZ);
    if (ss.ss_sp == NULL) {
        fprintf(stderr, "cannot allocate memory for sigaltstack\n");
        abort();
    }
    ss.ss_size = SIGSTKSZ;
    ss.ss_flags = 0;
    if (sigaltstack(&ss, NULL) == -1) {
        fprintf(stderr, "sigaltstack failed\n");
        abort();
    }
    struct sigaction sa;
    memset(&sa, 0, sizeof(struct sigaction));
    sigemptyset(&sa.sa_mask);
    sa.sa_sigaction = sigsegv;
    sa.sa_flags |= SA_SIGINFO;
    sa.sa_flags |= SA_ONSTACK;
    sigaction(SIGSEGV, &sa, NULL);
    int *a = NULL;
    a[0] = 1;
    return 0;
}
>Fix:
Prev by Date: Re: misc/48885 (testing the wevb interface)
Next by Date: PR/48883 CVS commit: src/usr.bin/sed
Previous by Thread: Re: misc/48885 (testing the wevb interface)
Next by Thread: PR/48883 CVS commit: src/usr.bin/sed
Indexes:
Home | Main Index | Thread Index | Old Index